A genus of destructive parasitic OOMYCETES in the family Peronosporaceae, order Peronosporales, affecting numerous fruit, vegetable, and other crops. Differentiation of zoospores usually takes place in the sporangium and no vesicle is formed. It was previously considered a fungus.
Proteins found in any species of algae.
Diseases of plants.
A plant species of the genus SOLANUM, family SOLANACEAE. The starchy roots are used as food. SOLANINE is found in green parts.
A genus of destructive root-parasitic OOMYCETES in the family Pythiaceae, order Peronosporales, commonly found in cultivated soils all over the world. Differentiation of zoospores takes place in a vesicle.
Deoxyribonucleic acid that makes up the genetic material of algae.
Eukaryotes in the group STRAMENOPILES, formerly considered FUNGI, whose exact taxonomic level is unsettled. Many consider Oomycetes (Oomycota) a phylum in the kingdom Stramenopila, or alternatively, as Pseudofungi in the phylum Heterokonta of the kingdom Chromista. They are morphologically similar to fungi but have no close phylogenetic relationship to them. Oomycetes are found in both fresh and salt water as well as in terrestrial environments. (Alexopoulos et al., Introductory Mycology, 4th ed, pp683-4). They produce flagellated, actively motile spores (zoospores) that are pathogenic to many crop plants and FISHES.
A plant genus of the family ERICACEAE.
A plant genus of the family SOLANACEAE. Members contain SOLANACEOUS ALKALOIDS. Some species in this genus are called deadly nightshade which is also a common name for ATROPA BELLADONNA.
A plant genus of the family SOLANACEAE. The hot peppers yield CAPSAICIN, which activates VANILLOID RECEPTORS. Several varieties have sweet or pungent edible fruits that are used as vegetables when fresh and spices when the pods are dried.
An annual legume. The SEEDS of this plant are edible and used to produce a variety of SOY FOODS.
A plant genus in the LAURACEAE family. The tree, Persea americana Mill., is known for the Avocado fruit, the food of commerce.
A plant genus of the family ARACEAE. Members contain acrid calcium oxalate and LECTINS. Polynesians prepare the root into poi. Common names of Taro and Coco Yam (Cocoyam) may be confused with other ARACEAE; XANTHOSOMA; or with common yam (DIOSCOREA).
A structure found in plants, fungi, and algae, that produces and contains spores.
The capacity of an organism to defend itself against pathological processes or the agents of those processes. This most often involves innate immunity whereby the organism responds to pathogens in a generic way. The term disease resistance is used most frequently when referring to plants.
The reproductive elements of lower organisms, such as BACTERIA; FUNGI; and cryptogamic plants.
A plant genus in the LAURACEAE family. The tree, Umbellularia californica (Hook. & Arn.) Nutt., is known for aromatic leaves used in SPICES having a similar flavor to LAURUS.
The intergenic DNA segments that are between the ribosomal RNA genes (internal transcribed spacers) and between the tandemly repeated units of rDNA (external transcribed spacers and nontranscribed spacers).
A plant genus of the family SOLANACEAE. Members contain NICOTINE and other biologically active chemicals; its dried leaves are used for SMOKING.
Ribonucleic acid in algae having regulatory and catalytic roles as well as involvement in protein synthesis.
The inherent or induced capacity of plants to withstand or ward off biological attack by pathogens.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
The relationships of groups of organisms as reflected by their genetic makeup.
Reproductive bodies produced by fungi.
A plant genus of the family FAGACEAE that is a source of TANNINS. Do not confuse with Holly (ILEX).
A plant species of the family SOLANACEAE, native of South America, widely cultivated for their edible, fleshy, usually red fruit.
A subclass of peptide hydrolases that depend on an ASPARTIC ACID residue for their activity.
Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed)
A group of compounds which can be described as benzo-pyrano-furano-benzenes which can be formed from ISOFLAVONES by internal coupling of the B ring to the 4-ketone position. Members include medicarpin, phaseolin, and pisatin which are found in FABACEAE.
The usually underground portions of a plant that serve as support, store food, and through which water and mineral nutrients enter the plant. (From American Heritage Dictionary, 1982; Concise Dictionary of Biology, 1990)
A plant genus of the family CUCURBITACEAE, order Violales, subclass Dilleniidae, which includes pumpkin, gourd and squash.
A plant family of the order Solanales, subclass Asteridae. Among the most important are POTATOES; TOMATOES; CAPSICUM (green and red peppers); TOBACCO; and BELLADONNA.
Chemicals that kill or inhibit the growth of fungi in agricultural applications, on wood, plastics, or other materials, in swimming pools, etc.
A plant genus of the family APIACEAE used for flavoring food.
An exocellulase with specificity for 1,3-beta-D-glucasidic linkages. It catalyzes hydrolysis of beta-D-glucose units from the non-reducing ends of 1,3-beta-D-glucans, releasing GLUCOSE.
Proteins found in plants (flowers, herbs, shrubs, trees, etc.). The concept does not include proteins found in vegetables for which VEGETABLE PROTEINS is available.

Divinyl ether fatty acid synthesis in late blight-diseased potato leaves. (1/452)

We conducted a study of the patterns and dynamics of oxidized fatty acid derivatives (oxylipins) in potato leaves infected with the late-blight pathogen Phytophthora infestans. Two 18-carbon divinyl ether fatty acids, colneleic acid and colnelenic acid, accumulated during disease development. To date, there are no reports that such compounds have been detected in higher plants. The divinyl ether fatty acids accumulate more rapidly in potato cultivar Matilda (a cultivar with increased resistance to late blight) than in cultivar Bintje, a susceptible cultivar. Colnelenic acid reached levels of up to approximately 24 nmol (7 microgram) per g fresh weight of tissue in infected leaves. By contrast, levels of members of the jasmonic acid family did not change significantly during pathogenesis. The divinyl ethers also accumulated during the incompatible interaction of tobacco with tobacco mosaic virus. Colneleic and colnelenic acids were found to be inhibitory to P. infestans, suggesting a function in plant defense for divinyl ethers, which are unstable compounds rarely encountered in biological systems.  (+info)

Internuclear gene silencing in Phytophthora infestans. (2/452)

Transformation of the diploid oomycete plant pathogen Phytophthora infestans with antisense, sense, and promoter-less constructs of the coding sequence of the elicitin gene inf1 resulted in transcriptional silencing of both the transgenes and the endogenous gene. Since heterokaryons obtained by somatic fusion of an inf1-silenced transgenic strain and a wild-type strain displayed stable gene silencing, inf1 silencing is dominant and acts in trans. Inf1 remained silenced in nontransgenic homokaryotic progeny from the silenced heterokaryons, thereby demonstrating that the presence of transgenes is not essential for maintaining the silenced status of the endogenous inf1 gene. These findings support a model reminiscent of paramutation and involving a trans-acting factor that is capable of transferring a silencing signal between nuclei.  (+info)

Origin of a new Phytophthora pathogen through interspecific hybridization. (3/452)

Plant disease epidemics resulting from introductions of exotic fungal plant pathogens are a well known phenomenon. An associated risk-that accelerated pathogen evolution may be occurring as a consequence of genetic exchange between introduced, or introduced and resident, fungal pathogens-is largely unrecognized. This is, in part, because examples of natural, interspecific hybridization in fungi are very rare. Potential evolutionary developments range from the acquisition of new host specificities to emergence of entirely new pathogen taxa. We present evidence from cytological behavior, additive nucleotide bases in repetitive internal transcribed spacer regions of the rRNA-encoding DNA (rDNA), and amplified fragment length polymorphisms of total DNA that a new, aggressive Phytophthora pathogen of alder trees in Europe comprises a range of heteroploid-interspecific hybrids involving a Phytophthora cambivora-like species and an unknown taxon similar to Phytophthora fragariae. The hybrids' marked developmental instabilities, unusual morphological variability, and evidence for recombination in their internal transcribed spacer profiles indicates that they are of recent origin and that their evolution is continuing. The likelihood of such evolutionary events may be increasing as world trade in plants intensifies. However, routine diagnostic procedures currently in use are insufficiently sensitive to allow their detection.  (+info)

The non-enzymatic microbicidal activity of lysozymes. (4/452)

T4 lysozyme was thought to destroy bacteria by its muramidase activity. However, we demonstrate here that amphipathic helix stretches in the C-terminus of T4 lysozyme mediate its bactericidal and fungistatic activities. In heat-denatured T4 lysozyme, the enzymatic activity is completely abolished but unexpectedly, the antimicrobial functions remain preserved. Small synthetic peptides corresponding to amphipathic C-terminal domains of T4 lysozyme show a microbicidal activity. Its membrane disturbing activity was directly demonstrated for bacterial, fungal and plant cells but not in a hemolysis assay. Comparable results were obtained with hen egg white lysozyme. This opens up many new opportunities for optimization of lysozymes as antimicrobial agents in various applications by protein engineering.  (+info)

Characterization of elicitin-like phospholipases isolated from Phytophthora capsici culture filtrate. (5/452)

The phytopathogenic oomycete Phytophthora capsici secretes in culture a phospholipase activity. Two enzyme isoforms exhibiting a high phospholipase B activity were isolated by chromatography and electrophoresis. They differ in their apparent molar masses (22 and 32 kDa). Both proteins are glycosylated and share the same N-terminal amino acid sequence up to the 39th residue with a high homology with capsicein, the P. capsici elicitin. Although devoid of phospholipase activity, capsicein was shown by circular dichroism to specifically interact with negatively charged phospholipids, suggesting that the membrane lipids could be a potential target for elicitins.  (+info)

Early nuclear events in plant defence signalling: rapid gene activation by WRKY transcription factors. (6/452)

Parsley WRKY proteins comprise a family of plant-specific zinc-finger-type factors implicated in the regulation of genes associated with pathogen defence. In vitro, these proteins bind specifically to functionally defined TGAC-containing W box promoter elements within the Pathogenesis-Related Class10 (PR-10) genes. Here we present in vivo data demonstrating that WRKY1 is a transcriptional activator mediating fungal elicitor-induced gene expression by binding to W box elements. In situ RNA hybridization revealed that the WRKY1 gene is rapidly and locally activated in parsley leaf tissue around fungal infection sites. Transient expression studies in parsley protoplasts showed that a specific arrangement of W box elements in the WRKY1 promoter itself is necessary and sufficient for early activation and that WRKY1 binds to such elements. Our results demonstrate that WRKY transcription factors play an important role in the regulation of early defence-response genes including regulation of WRKY1.  (+info)

Hydrogen peroxide from the oxidative burst is neither necessary nor sufficient for hypersensitive cell death induction, phenylalanine ammonia lyase stimulation, salicylic acid accumulation, or scopoletin consumption in cultured tobacco cells treated with elicitin. (7/452)

H(2)O(2) from the oxidative burst, cell death, and defense responses such as the production of phenylalanine ammonia lyase (PAL), salicylic acid (SA), and scopoletin were analyzed in cultured tobacco (Nicotiana tabacum) cells treated with three proteinaceous elicitors: two elicitins (alpha-megaspermin and beta-megaspermin) and one glycoprotein. These three proteins have been isolated from Phytophthora megasperma H20 and have been previously shown to be equally efficient in inducing a hypersensitive response (HR) upon infiltration into tobacco leaves. However, in cultured tobacco cells these elicitors exhibited strikingly different biological activities. beta-Megaspermin was the only elicitor that caused cell death and induced a strong, biphasic H(2)O(2) burst. Both elicitins stimulated PAL activity similarly and strongly, while the glycoprotein caused only a slight increase. Only elicitins induced SA accumulation and scopoletin consumption, and beta-megaspermin was more efficient. To assess the role of H(2)O(2) in HR cell death and defense response expression in elicitin-treated cells, a gain and loss of function strategy was used. Our results indicated that H(2)O(2) was neither necessary nor sufficient for HR cell death, PAL activation, or SA accumulation, and that extracellular H(2)O(2) was not a direct cause of intracellular scopoletin consumption.  (+info)

The phytophthora genome initiative database: informatics and analysis for distributed pathogenomic research. (8/452)

The Phytophthora Genome Initiative (PGI) is a distributed collaboration to study the genome and evolution of a particularly destructive group of plant pathogenic oomycete, with the goal of understanding the mechanisms of infection and resistance. NCGR provides informatics support for the collaboration as well as a centralized data repository. In the pilot phase of the project, several investigators prepared Phytophthora infestans and Phytophthora sojae EST and Phytophthora sojae BAC libraries and sent them to another laboratory for sequencing. Data from sequencing reactions were transferred to NCGR for analysis and curation. An analysis pipeline transforms raw data by performing simple analyses (i.e., vector removal and similarity searching) that are stored and can be retrieved by investigators using a web browser. Here we describe the database and access tools, provide an overview of the data therein and outline future plans. This resource has provided a unique opportunity for the distributed, collaborative study of a genus from which relatively little sequence data are available. Results may lead to insight into how better to control these pathogens. The homepage of PGI can be accessed at http:www.ncgr.org/pgi, with database access through the database access hyperlink.  (+info)

"Phytophthora" is not a medical term, but rather a genus of microorganisms known as oomycetes, which are commonly referred to as water molds. These organisms are not true fungi, but they have a similar lifestyle and can cause diseases in plants. Some species of Phytophthora are responsible for significant crop losses and are considered important plant pathogens.

In a medical context, the term "phytophthora" is not used, and it would be more appropriate to refer to specific diseases caused by these organisms using their common or scientific names. For example, Phytophthora infestans is the causative agent of late blight, a serious disease of potatoes and tomatoes.

Algal proteins are a type of protein that are derived from algae, which are simple, plant-like organisms that live in water. These proteins can be extracted and isolated from the algae through various processing methods and can then be used as a source of nutrition for both humans and animals.

Algal proteins are considered to be a complete protein source because they contain all of the essential amino acids that the body cannot produce on its own. They are also rich in other nutrients, such as vitamins, minerals, and antioxidants. Some species of algae, such as spirulina and chlorella, have particularly high protein contents, making them a popular choice for use in dietary supplements and functional foods.

In addition to their nutritional benefits, algal proteins are also being studied for their potential therapeutic uses. For example, some research suggests that they may have anti-inflammatory, antioxidant, and immune-boosting properties. However, more research is needed to confirm these potential health benefits and to determine the optimal dosages and methods of use.

A plant disease is a disorder that affects the normal growth and development of plants, caused by pathogenic organisms such as bacteria, viruses, fungi, parasites, or nematodes, as well as environmental factors like nutrient deficiencies, extreme temperatures, or physical damage. These diseases can cause various symptoms, including discoloration, wilting, stunted growth, necrosis, and reduced yield or productivity, which can have significant economic and ecological impacts.

"Solanum tuberosum" is the scientific name for a plant species that is commonly known as the potato. According to medical and botanical definitions, Solanum tuberosum refers to the starchy, edible tubers that grow underground from this plant. Potatoes are native to the Andes region of South America and are now grown worldwide. They are an important food source for many people and are used in a variety of culinary applications.

Potatoes contain several essential nutrients, including carbohydrates, fiber, protein, vitamin C, and some B vitamins. However, they can also be high in calories, especially when prepared with added fats like butter or oil. Additionally, potatoes are often consumed in forms that are less healthy, such as French fries and potato chips, which can contribute to weight gain and other health problems if consumed excessively.

In a medical context, potatoes may also be discussed in relation to food allergies or intolerances. While uncommon, some people may have adverse reactions to potatoes, including skin rashes, digestive symptoms, or difficulty breathing. These reactions are typically caused by an immune response to proteins found in the potato plant, rather than the tubers themselves.

Pythium is a genus of microscopic, aquatic fungus-like organisms called oomycetes. They are commonly referred to as water molds and can be found in various environments such as soil, freshwater, and marine habitats. Some species of Pythium are known to cause plant diseases, while others can infect animals, including humans, causing a variety of conditions primarily related to the eye and skin.

In human medicine, Pythium insidiosum is the most relevant species, as it can cause a rare but severe infection called pythiosis. This infection typically affects the eyes (keratopythiosis) or the gastrointestinal tract (gastrointestinal pythiosis). The infection occurs through direct contact with contaminated water or soil, and it is more prevalent in tropical and subtropical regions.

Pythium insidiosum produces filamentous structures called hyphae that can invade and damage tissues, leading to the formation of granulomatous lesions. The infection can be difficult to diagnose and treat due to its rarity and the limited number of effective antifungal agents available. Surgical intervention and immunotherapy are often necessary in addition to medical treatment for successful management.

I'm not a medical expert, but I can provide you with some information about algal DNA.

Algal DNA refers to the genetic material found in algae, which are simple, photosynthetic organisms that live in various aquatic environments. The DNA of algae is similar to that of other living organisms, as it carries the genetic instructions necessary for the growth, development, and reproduction of these single-celled or multicellular life forms.

Algal DNA can be found in different types of algae, including:

1. Chlorophyta (green algae)
2. Rhodophyta (red algae)
3. Phaeophyceae (brown algae)
4. Cyanobacteria (blue-green algae or cyanoprokaryotes, which are actually bacteria with photosynthetic capabilities)

These different groups of algae have unique characteristics and ecological roles in their environments. Studying the DNA of algae can help researchers understand their evolutionary relationships, genetic diversity, and potential applications in various fields such as biotechnology, bioenergy, and environmental science.

Oomycetes, also known as water molds or downy mildews, are a group of primarily aquatic, filamentous microorganisms. They were once classified as fungi due to their similar morphology and ecological roles, but they are now known to be more closely related to brown algae and diatoms.

Oomycetes have cell walls made of cellulose and unique osmotically active compounds called cell wall glycoproteins. They reproduce both sexually and asexually, producing structures such as zoospores that can swim through water to find new hosts. Oomycetes are parasites or saprophytes, feeding on other organisms or dead organic matter.

Some oomycetes are important plant pathogens, causing diseases such as potato blight (Phytophthora infestans) and sudden oak death (Phytophthora ramorum). They can cause significant damage to crops and natural ecosystems, making them a focus of study in plant pathology.

I'm sorry for any confusion, but "Rhododendron" is not a medical term. It is a genus of woody plants in the heath family Ericaceae, which includes shrubs and small trees commonly known as rhododendrons and azaleas. Some species contain toxic compounds that can cause health issues if ingested, but "Rhododendron" itself is not a medical term or concept.

"Solanum" is a genus of flowering plants that includes many species, some of which are economically important as food crops and others which are toxic. The term "Solanum" itself does not have a specific medical definition, but several species within this genus are relevant to medicine and human health. Here are some examples:

1. Solanum lycopersicum (tomato): While tomatoes are primarily known as a food crop, they also contain various compounds with potential medicinal properties. For instance, they are rich in antioxidants like lycopene, which has been studied for its potential benefits in preventing cancer and cardiovascular diseases.
2. Solanum tuberosum (potato): Potatoes are a staple food crop, but their leaves and green parts contain solanine, a toxic alkaloid that can cause gastrointestinal disturbances, neurological symptoms, and even death in severe cases.
3. Solanum melongena (eggplant): Eggplants have been studied for their potential health benefits due to their high antioxidant content, including nasunin, which has been shown to protect against lipid peroxidation and DNA damage.
4. Solanum nigrum (black nightshade): This species contains solanine and other toxic alkaloids, but some parts of the plant have been used in traditional medicine for their anti-inflammatory, analgesic, and antipyretic properties. However, its use as a medicinal herb is not well-established, and it can be toxic if improperly prepared or consumed in large quantities.
5. Solanum dulcamara (bittersweet nightshade): This species has been used in traditional medicine for various purposes, including treating skin conditions, respiratory ailments, and gastrointestinal complaints. However, its use as a medicinal herb is not well-supported by scientific evidence, and it can be toxic if ingested in large quantities.

In summary, "Solanum" refers to a genus of flowering plants that includes several species with relevance to medicine and human health. While some species are important food crops, others contain toxic compounds that can cause harm if improperly consumed or prepared. Additionally, the medicinal use of some Solanum species is not well-established and may carry risks.

'Capsicum' is the medical term for a genus of plants that are commonly known as peppers or chili peppers. These plants belong to the nightshade family (Solanaceae) and are native to Central and South America. The fruits of these plants are used extensively in cooking and medicine, and they vary widely in shape, size, color, and pungency.

The active components of capsicum fruits are a group of compounds called capsaicinoids, which give the fruit its spicy or hot taste. The most common capsaicinoid is capsaicin, which is responsible for the majority of the heat sensation experienced when consuming chili peppers.

Capsicum fruits have been used in traditional medicine for centuries to treat a variety of conditions, including pain relief, inflammation, and digestive disorders. Modern research has supported some of these uses, and capsaicin is now available as an over-the-counter topical cream or patch for the treatment of pain associated with arthritis, nerve damage, and muscle strain.

It's important to note that while capsicum fruits have many potential health benefits, they can also cause adverse reactions in some people, particularly if consumed in large quantities. These reactions can include stomach upset, skin irritation, and respiratory problems. It's always best to consult with a healthcare provider before using capsicum or any other herbal remedy for medicinal purposes.

I'm sorry for any confusion, but "soybeans" are not a medical term. They are a type of legume that is commonly used in agriculture and food production. The medical community might discuss soybeans in the context of nutrition or allergies, but there isn't a formal medical definition for this term.

Here's some general information: Soybeans, scientifically known as Glycine max, are native to East Asia and are now grown worldwide. They are a significant source of plant-based protein and oil. Soybeans contain various nutrients, including essential amino acids, fiber, B vitamins, and minerals like calcium, iron, magnesium, and zinc. They are used in various food products such as tofu, soy milk, tempeh, and miso. Additionally, soybeans are also used in the production of industrial products, including biodiesel, plastics, and inks. Some people may have allergic reactions to soybeans or soy products.

"Persea" is a botanical term that refers to a genus of plants in the family Lauraceae, which includes over 150 species. The most well-known member of this genus is Persea americana, which is commonly known as the avocado tree. The fruit of this tree, also called an avocado, is widely consumed for its rich, creamy texture and high nutritional value. Avocados are a good source of healthy fats, fiber, vitamins, and minerals, and have been linked to various health benefits.

Therefore, in a medical or nutritional context, "Persea" may refer specifically to the avocado fruit or its extracts, which have been used in traditional medicine for their anti-inflammatory, antioxidant, and hypolipidemic properties. However, it is important to note that not all species of Persea have similar medicinal or nutritional benefits, so any medical or health claims should be specific to the particular species or extract being used.

Colocasia is a genus of flowering plants in the arum family, Araceae. It includes several species commonly known as taro or elephant ears, which are cultivated for their edible corms and leaves. The term "colocasia" is also used more specifically to refer to certain species within this genus, such as Colocasia esculenta, which is one of the most widely consumed types of taro.

It's important to note that while colocasia plants have many uses and are an important food source in many parts of the world, they also contain calcium oxalate crystals, which can cause irritation and discomfort if eaten raw or improperly prepared. Proper cooking and preparation is necessary to remove these crystals and make colocasia safe to eat.

Sporangia are specialized structures in fungi, algae, and some plants (such as ferns and mosses) where spores are produced. Spores are essentially the reproductive units that can give rise to new individuals when they germinate under favorable conditions. In the case of sporangia found in fungi and algae, they are typically asexual spores, meaning they are produced without fertilization. However, in plants like ferns and mosses, sporangia can produce both asexual (called megaspores) and sexual (called microspores) spores. The structure of sporangia varies widely across different groups of organisms but generally serves the same purpose of spore production and dissemination for reproduction.

Disease resistance, in a medical context, refers to the inherent or acquired ability of an organism to withstand or limit infection by a pathogen, such as bacteria, viruses, fungi, or parasites. This resistance can be due to various factors including the presence of physical barriers (e.g., intact skin), chemical barriers (e.g., stomach acid), and immune responses that recognize and eliminate the pathogen.

Inherited disease resistance is often determined by genetics, where certain genetic variations can make an individual more or less susceptible to a particular infection. For example, some people are naturally resistant to certain diseases due to genetic factors that prevent the pathogen from infecting their cells or replicating within them.

Acquired disease resistance can occur through exposure to a pathogen, which triggers an immune response that confers immunity or resistance to future infections by the same pathogen. This is the basis of vaccination, where a weakened or dead form of a pathogen is introduced into the body to stimulate an immune response without causing disease.

Overall, disease resistance is an important factor in maintaining health and preventing the spread of infectious diseases.

In the context of medicine, spores are typically discussed in relation to certain types of infections and diseases caused by microorganisms such as bacteria or fungi. Spores are a dormant, resistant form of these microorganisms that can survive under harsh environmental conditions, such as extreme temperatures, lack of nutrients, and exposure to chemicals.

Spores can be highly resistant to heat, radiation, and disinfectants, making them difficult to eliminate from contaminated surfaces or medical equipment. When the conditions are favorable, spores can germinate and grow into mature microorganisms that can cause infection.

Some examples of medically relevant spores include those produced by Clostridioides difficile (C. diff), a bacterium that can cause severe diarrhea and colitis in hospitalized patients, and Aspergillus fumigatus, a fungus that can cause invasive pulmonary aspergillosis in immunocompromised individuals.

It's worth noting that spores are not unique to medical contexts and have broader relevance in fields such as botany, mycology, and biology.

"Umbellularia" is a botanical term that refers to a genus of evergreen trees, also known as the "Bay Laurel" or "California Bay." While it is not a medical term itself, some compounds derived from Umbellularia californica have been studied for their potential medicinal properties. For instance, the leaves and fruits of this tree contain essential oils with reported antimicrobial, anti-inflammatory, and insecticidal activities. However, it is crucial to note that further research is necessary before any definitive medical claims can be made about Umbellularia's therapeutic applications.

The ribosomal spacer in DNA refers to the non-coding sequences of DNA that are located between the genes for ribosomal RNA (rRNA). These spacer regions are present in the DNA of organisms that have a nuclear genome, including humans and other animals, plants, and fungi.

In prokaryotic cells, such as bacteria, there are two ribosomal RNA genes, 16S and 23S, separated by a spacer region known as the intergenic spacer (IGS). In eukaryotic cells, there are multiple copies of ribosomal RNA genes arranged in clusters called nucleolar organizer regions (NORs), which are located on the short arms of several acrocentric chromosomes. Each cluster contains hundreds to thousands of copies of the 18S, 5.8S, and 28S rRNA genes, separated by non-transcribed spacer regions known as internal transcribed spacers (ITS) and external transcribed spacers (ETS).

The ribosomal spacer regions in DNA are often used as molecular markers for studying evolutionary relationships among organisms because they evolve more rapidly than the rRNA genes themselves. The sequences of these spacer regions can be compared among different species to infer their phylogenetic relationships and to estimate the time since they diverged from a common ancestor. Additionally, the length and composition of ribosomal spacers can vary between individuals within a species, making them useful for studying genetic diversity and population structure.

Tobacco is not a medical term, but it refers to the leaves of the plant Nicotiana tabacum that are dried and fermented before being used in a variety of ways. Medically speaking, tobacco is often referred to in the context of its health effects. According to the World Health Organization (WHO), "tobacco" can also refer to any product prepared from the leaf of the tobacco plant for smoking, sucking, chewing or snuffing.

Tobacco use is a major risk factor for a number of diseases, including cancer, heart disease, stroke, lung disease, and various other medical conditions. The smoke produced by burning tobacco contains thousands of chemicals, many of which are toxic and can cause serious health problems. Nicotine, one of the primary active constituents in tobacco, is highly addictive and can lead to dependence.

I'm happy to help! However, I believe there might be a slight confusion in your question. RNA stands for "ribonucleic acid," which is a type of nucleic acid that plays a crucial role in biology, particularly in the process of gene expression. It's important to note that "algal" generally refers to something related to algae, which are simple, photosynthetic organisms.

There isn't a specific medical definition for "Algal RNA." However, if you're referring to RNA found in algae or RNA with a role in algal biology, then the definition would be as follows:

RNA is a nucleic acid present in algae that carries genetic information and is involved in various cellular processes. Algal RNA can exist in several forms, including messenger RNA (mRNA), ribosomal RNA (rRNA), and transfer RNA (tRNA). These RNAs play essential roles in protein synthesis, regulation of gene expression, and other cellular functions within algae.

If you meant something different by "Algal RNA," please provide more context or clarify your question, and I'll be glad to help further!

"Plant immunity" refers to the complex defense mechanisms that plants have evolved to protect themselves from pathogens, such as bacteria, viruses, fungi, and nematodes. Plants do not have an adaptive immune system like humans, so they rely on their innate immune responses to detect and respond to pathogen invasion.

Plant immunity can be broadly categorized into two types: PTI (PAMP-triggered immunity) and ETI (Effector-triggered immunity). PTI is activated when the plant recognizes conserved microbial patterns, known as PAMPs (Pathogen-Associated Molecular Patterns), through pattern recognition receptors (PRRs) located on the cell surface. This recognition triggers a series of defense responses, such as the production of reactive oxygen species, the activation of mitogen-activated protein kinases (MAPKs), and the expression of defense genes.

ETI is activated when the plant recognizes effector proteins produced by pathogens to suppress PTI. Effector recognition typically occurs through resistance (R) proteins that can directly or indirectly recognize effectors, leading to the activation of stronger defense responses, such as the hypersensitive response (HR), which involves localized programmed cell death to limit pathogen spread.

Overall, plant immunity is a complex and dynamic process involving multiple layers of defense mechanisms that help plants protect themselves from pathogens and maintain their health and productivity.

Molecular sequence data refers to the specific arrangement of molecules, most commonly nucleotides in DNA or RNA, or amino acids in proteins, that make up a biological macromolecule. This data is generated through laboratory techniques such as sequencing, and provides information about the exact order of the constituent molecules. This data is crucial in various fields of biology, including genetics, evolution, and molecular biology, allowing for comparisons between different organisms, identification of genetic variations, and studies of gene function and regulation.

Phylogeny is the evolutionary history and relationship among biological entities, such as species or genes, based on their shared characteristics. In other words, it refers to the branching pattern of evolution that shows how various organisms have descended from a common ancestor over time. Phylogenetic analysis involves constructing a tree-like diagram called a phylogenetic tree, which depicts the inferred evolutionary relationships among organisms or genes based on molecular sequence data or other types of characters. This information is crucial for understanding the diversity and distribution of life on Earth, as well as for studying the emergence and spread of diseases.

Fungal spores are defined as the reproductive units of fungi that are produced by specialized structures called hyphae. These spores are typically single-celled and can exist in various shapes such as round, oval, or ellipsoidal. They are highly resistant to extreme environmental conditions like heat, cold, and dryness, which allows them to survive for long periods until they find a suitable environment to germinate and grow into a new fungal organism. Fungal spores can be found in the air, water, soil, and on various surfaces, making them easily dispersible and capable of causing infections in humans, animals, and plants.

"Quercus" is not a medical term. It is the genus name for oak trees in the plant kingdom, specifically within the family Fagaceae. Some people may confuse it with "Quercetin," which is a type of flavonoid antioxidant commonly found in many plants, including oak trees. Quercetin has been studied for its potential health benefits, such as anti-inflammatory and antioxidant properties, but it is not specific to oak trees.

"Lycopersicon esculentum" is the scientific name for the common red tomato. It is a species of fruit from the nightshade family (Solanaceae) that is native to western South America and Central America. Tomatoes are widely grown and consumed in many parts of the world as a vegetable, although they are technically a fruit. They are rich in nutrients such as vitamin C, potassium, and lycopene, which has been studied for its potential health benefits.

Aspartic acid proteases are a type of enzyme that cleaves peptide bonds in proteins. They are called "aspartic" proteases because they contain two aspartic acid residues in their active site, which are essential for their catalytic function. These enzymes work by bringing the two carboxyl groups of the adjacent aspartic acids into close proximity, allowing them to act as a catalyst for the hydrolysis of peptide bonds.

Aspartic acid proteases play important roles in various biological processes, including protein degradation, cell signaling, and viral infection. Some examples of aspartic acid proteases include pepsin, cathepsin D, and HIV-1 protease. These enzymes are often targeted by drugs for the treatment of diseases such as cancer, arthritis, and AIDS.

I believe there may be a slight misunderstanding in your question. "Plant leaves" are not a medical term, but rather a general biological term referring to a specific organ found in plants.

Leaves are organs that are typically flat and broad, and they are the primary site of photosynthesis in most plants. They are usually green due to the presence of chlorophyll, which is essential for capturing sunlight and converting it into chemical energy through photosynthesis.

While leaves do not have a direct medical definition, understanding their structure and function can be important in various medical fields, such as pharmacognosy (the study of medicinal plants) or environmental health. For example, certain plant leaves may contain bioactive compounds that have therapeutic potential, while others may produce allergens or toxins that can impact human health.

Pterocarpans are a type of chemical compound known as flavonoids, which are found naturally in plants. They are specifically classified as a subgroup of pterocarpanoids and have a characteristic chemical structure consisting of two benzene rings joined by a heterocyclic pyran ring.

Pterocarpans are produced through the phenylpropanoid pathway, which is a metabolic route used by plants to synthesize various compounds with diverse biological activities. These compounds have been found to possess a range of pharmacological properties, including anti-inflammatory, antimicrobial, and anticancer effects.

Some examples of pterocarpans include medicarpin, maackiain, and glyceollins. They are commonly found in leguminous plants such as soybeans, kudzu, and red clover. In recent years, there has been growing interest in the potential therapeutic applications of pterocarpans due to their diverse biological activities.

A plant root is not a medical term per se, but it is a term from botany, which is the study of plants. However, I can certainly provide a definition for you.

Plant roots are the underground organs of a plant that typically grow downward into the soil. They serve several important functions, including:

1. Anchorage: Roots help to stabilize the plant and keep it upright in the ground.
2. Absorption: Roots absorb water and nutrients from the soil, which are essential for the plant's growth and development.
3. Conduction: Roots conduct water and nutrients up to the above-ground parts of the plant, such as the stem and leaves.
4. Vegetative reproduction: Some plants can reproduce vegetatively through their roots, producing new plants from root fragments or specialized structures called rhizomes or tubers.

Roots are composed of several different tissues, including the epidermis, cortex, endodermis, and vascular tissue. The epidermis is the outermost layer of the root, which secretes a waxy substance called suberin that helps to prevent water loss. The cortex is the middle layer of the root, which contains cells that store carbohydrates and other nutrients. The endodermis is a thin layer of cells that surrounds the vascular tissue and regulates the movement of water and solutes into and out of the root. The vascular tissue consists of xylem and phloem, which transport water and nutrients throughout the plant.

'Cucurbita' is a genus of herbaceous vines in the gourd family, Cucurbitaceae. This genus includes several species of plants that are commonly known as squashes or gourds, such as pumpkins, zucchinis, and acorn squashes. The fruits of these plants are widely cultivated and consumed for their nutritional value and versatility in cooking.

The name 'Cucurbita' comes from the Latin word for "gourd" or "pumpkin." Plants in this genus are native to the Americas, with some species originating in Mexico and Central America and others in the southern United States. They have been cultivated by humans for thousands of years and are an important part of many traditional diets around the world.

In a medical context, 'Cucurbita' may be mentioned in relation to the use of certain species as traditional remedies or in nutritional studies. For example, pumpkin seeds have been used in traditional medicine to treat parasitic infections, and some research suggests that they may have anti-inflammatory and antioxidant properties. However, it is important to note that the scientific evidence for these potential health benefits is still limited, and more research is needed before any firm conclusions can be drawn.

"Solanaceae" is not a medical term but a taxonomic category in biology, referring to the Nightshade family of plants. This family includes several plants that have economic and medicinal importance, as well as some that are toxic or poisonous. Some common examples of plants in this family include:

- Solanum lycopersicum (tomato)
- Solanum tuberosum (potato)
- Capsicum annuum (bell pepper and chili pepper)
- Nicotiana tabacum (tobacco)
- Atropa belladonna (deadly nightshade)
- Hyoscyamus niger (henbane)

While Solanaceae isn't a medical term itself, certain plants within this family have medical significance. For instance, some alkaloids found in these plants can be used as medications or pharmaceutical precursors, such as atropine and scopolamine from Atropa belladonna, hyoscine from Hyoscyamus niger, and capsaicin from Capsicum species. However, it's important to note that many of these plants also contain toxic compounds, so they must be handled with care and used only under professional supervision.

Industrial fungicides are antimicrobial agents used to prevent, destroy, or inhibit the growth of fungi and their spores in industrial settings. These can include uses in manufacturing processes, packaging materials, textiles, paints, and other industrial products. They work by interfering with the cellular structure or metabolic processes of fungi, thereby preventing their growth or reproduction. Examples of industrial fungicides include:

* Sodium hypochlorite (bleach)
* Formaldehyde
* Glutaraldehyde
* Quaternary ammonium compounds
* Peracetic acid
* Chlorhexidine
* Iodophors

It's important to note that some of these fungicides can be harmful or toxic to humans and other organisms, so they must be used with caution and in accordance with safety guidelines.

"Petroselinum" is the genus name for a group of plants that include several types of parsley. The most common variety is often used as a herb in cooking and is known as "Petroselinum crispum." It is native to the Mediterranean region and is now grown worldwide. Parsley has a bright, fresh flavor and is often used as a garnish or added to recipes for additional flavor. In addition to its use as a culinary herb, parsley has also been used in traditional medicine for its potential diuretic and digestive properties. However, it's important to note that the scientific evidence supporting these uses is limited, and more research is needed before any firm conclusions can be drawn.

Glucan 1,3-beta-Glucosidase is an enzyme that breaks down 1,3-beta-D-glucans, which are polysaccharides made up of chains of beta-D-glucose molecules linked together by 1,3-beta-glycosidic bonds. This enzyme catalyzes the hydrolysis of these glycosidic bonds, releasing individual glucose molecules or smaller oligosaccharides.

Glucan 1,3-beta-Glucosidase is found in various organisms, including bacteria, fungi, and higher plants. It has potential applications in biotechnology, such as in the production of biofuels and the degradation of plant material for use in animal feed. Additionally, it has been studied for its potential role in the treatment of certain medical conditions, such as fungal infections, where it can help to break down the cell walls of pathogenic fungi.

"Plant proteins" refer to the proteins that are derived from plant sources. These can include proteins from legumes such as beans, lentils, and peas, as well as proteins from grains like wheat, rice, and corn. Other sources of plant proteins include nuts, seeds, and vegetables.

Plant proteins are made up of individual amino acids, which are the building blocks of protein. While animal-based proteins typically contain all of the essential amino acids that the body needs to function properly, many plant-based proteins may be lacking in one or more of these essential amino acids. However, by consuming a variety of plant-based foods throughout the day, it is possible to get all of the essential amino acids that the body needs from plant sources alone.

Plant proteins are often lower in calories and saturated fat than animal proteins, making them a popular choice for those following a vegetarian or vegan diet, as well as those looking to maintain a healthy weight or reduce their risk of chronic diseases such as heart disease and cancer. Additionally, plant proteins have been shown to have a number of health benefits, including improving gut health, reducing inflammation, and supporting muscle growth and repair.

... pelgrandis Phytophthora phaseoli Phytophthora pini Phytophthora pinifolia Phytophthora pisi Phytophthora pistaciae Phytophthora ... Phytophthora acerina Phytophthora afrocarpa Phytophthora agathidicida Phytophthora aleatoria Phytophthora alni Phytophthora × ... dauci Phytophthora drechsleri Phytophthora drechsleri var. cajani Phytophthora elongata Phytophthora cf. elongata Phytophthora ... arenaria Phytophthora aff. arenaria Phytophthora asiatica Phytophthora asparagi Phytophthora aff. asparagi Phytophthora ...
Microscopic image of a Phytophthora ramorum spore. ...
There are a number of different Phytophthora species, all causing very similar symptoms. Herbaceous perennials, ... Phytophthora root rot is the most common cause of root and stem base decay of a wide range of trees and shrubs. ... Phytophthora root rot. After honey fungus, Phytophthora root rot is the most common cause of root and stem base decay of a wide ... Common name Phytophthora root rot. Scientific name Phytophthora species. Plants affected A wide range of both soil- and ...
Known occurrences, collected specimens and observations of Phytophthora de Bary 1876. View this species on GBIF ...
Phytophthora citricola Sawada Synonyms. Phytophthora pini Leonian Depositors. MD Coffey Chain of custody. ATCC <-- MD Coffey ... To download a certificate of analysis for Phytophthora citricola Sawada (66769), enter the lot number exactly as it appears on ... To download a certificate of origin for Phytophthora citricola Sawada (66769), enter the lot number exactly as it appears on ... The certificate of analysis for that lot of Phytophthora citricola Sawada (66769) is not currently available online. Complete ...
Major apple pathogen that causes Phytophthora Crown Rot, Collar Rot, and Root Rot. This strain was isolated in 1984 from Pyrus ... Phytophthora primulae Thomlinson 56963â„¢ Major apple pathogen that causes Phytophthora Crown Rot, Collar Rot, and Root Rot. This ... Phytophthora primulae Thomlinson Depositors. HH Ho Chain of custody. ATCC <-- HH Ho Type of isolate. Food & Beverage; Plant ... To download a certificate of origin for Phytophthora primulae Thomlinson (56963), enter the lot number exactly as it appears on ...
Phytophthora bilorbang. References[edit]. *Aghighi, S; Hardy, G E S J; Scott, J K; Burgess, T I. 2012: Phytophthora bilorbang ... Genus: Phytophthora. Species: Phytophthora bilorbang Name[edit]. * ... Retrieved from "https://species.wikimedia.org/w/index.php?title=Phytophthora_bilorbang&oldid=5663677" ...
... tripartite tubular hairs on the anterior flagellum of Phytophthora zoospores, are instrumental for disease dissemination to new ... Hee W, Torreña P, Blackman L, Hardham A & Lamour K (2013) Phytophthora cinnamomi in Australia. In: Lamour, K (ed.) Phytophthora ... Balci, Y, Bienapfl, JC & Lamour, K (2013) Phytophthora in US forests. In: Lamour, K (ed.) Phytophthora: a global perspective. ... Ludowici VA, Zhang W, Blackman LM, Hardham AR, Lamour K (2013) Phytophthora nicotianae. In: Lamour K (ed) Phytophthora: a ...
An introduction to phytophthora or root rot and the damage it can cause. Preventing its spread with quarantine and hygiene and ... The fungus Phytophthora (Fye-toff-thra) root rot has caused quite a few disasters as its traveled around the world. One ... Interestingly, Phytophthora root rot does not usually cause a lot of damage in undisturbed vegetation in areas where annual ...
Similar words for Phytophthora. Definition: noun. destructive parasitic fungi causing brown rot in plants. ... Phytophthora (phytophthora parasitica) root and crown rot are soil-borne organisms and are common problems affecting bedding ... Sentences with phytophthora 1. Noun, plural Leaves infected by phytophthora root rot will appear drought-stressed and can die ... Also called brown rot and collar rot, this fungus occurs when a phytophthora fungus is in your soil. 3. Adjective Cleveland ...
Phytophthora Identification and Sampling in Citrus Nurseries1. Jamie D. Burrow, Diane B. Bright, Tim D. Riley, Evan G. Johnson ... Phytophthora species are important soilborne, fungus-like pathogens that attack the root systems, trunk, and fruit of citrus ... The back lists sampling procedures: soil collection, soil testing, and diagnosing phytophthora. ...
... peppers to Phytophthora blight. Variability in disease severity and SSR markers highlight the need for alternative controls in ... Inheritance of Phytophthora stem blight resistance as compared to Phytophthora root rot and Phytophthora foliar blight ... accessions to the three forms of Phytophthora blight (root rot, stem blight and foliar blight) caused by Phytophthora capsici. ... Kim, Y.J., Hwang, B.K. and Park, K.W. (1989) Expression of age-related resistance in pepper plants infected with Phytophthora ...
Investigating the genetic structure of Phytophthora capsici populations. L. QUESADA-OCAMPO (1), L. Granke (1), M. Mercier (1), ... Phytophthora capsici is a destructive soilborne pathogen that infects economically important vegetable crops. The objective of ...
EFSA: (2011) Scientific Opinion on the Pest Risk Analysis on Phytophthora ramorum. Publisert 28.06.2011 Sist endret 13.08.2020 ... Du er her: Forside / Planter og dyrking / Planteskadegjørere / Soppsjukdommer / Ramorum greinvisning (Phytophthora ramorum) / ... EFSA: (2011) Scientific Opinion on the Pest Risk Analysis on Phytophthora ramorum ... EFSA: (2011) Scientific Opinion on the Pest Risk Analysis on Phytophthora ramorum ...
But, for as hardy as they are, phytophthora root rot can affect azalea shrubs. Click here to learn more. ... Treating Phytophthora Root Rot. As with most fungus, the best way to treat phytophthora root rot is to make sure that your ... Symptoms of Phytophthora Root Rot. Phytophthora root rot is a disease that affects azaleas. For an azalea owner, seeing signs ... Phytophthora root rot not only affects azaleas, but several other landscape plants as well. As mentioned, phytophthora root rot ...
These genes could also be used to confer sustainable resistance to a broad variety of Phytophthora species.,br/,,br/,This award ... Phytophthora are filamentous eukaryotic pathogens that cause numerous destructive plant diseases including potato late blight ... This project is based on the exciting discovery that a large number of Phytophthora effectors contain tandem repeats of a ... Targeting a conserved structural module in Phytophthora effectors for disease resistance. Objective ...
Resistance of Biggs Safflower to Phytophthora Root Rot and its Inheritance. C. A. Thomas, Research Plant Pathologist, Crops ... The safflower cultivar Biggs possesses a high level of resistance to root rot incited by Phytophthora drechsleri. Wound ...
... 25/05/2017. Larousse, Marie; Rancurel, Corinne; Syska, ... The nature of these interactions was explored for the polyphagous and telluric species Phytophthora parasitica. ...
Many different Phytophthora species, including some unknown to science, were discovered but perhaps most notably P. ramorum was ... The research is part of an ongoing initiative to understand the origins of various Phytophthora species that are highly ... The Destructive Tree Pathogen Phytophthora ramorum Originates from the Laurosilva Forests of East Asia. J. Fungi 2021, 7, 226. ... Recently published research in the Journal of Fungi reveals the destructive tree pathogen Phytophthora ramorum originates from ...
Public notice of the area in Carmarthenshire with restrictions to prevent the spread of Phytophthora Pluvialis. ... Phytophthora Pluvialis demarcated area 7: public notice (revoked) Public notice of the area in Carmarthenshire with ... Phytophthora Pluvialis demarcated area 7: public notice (revoked) , file type: PDF, file size: 79 KB ...
Phytophthora Online Course: Training for Nursery Growers.. Phytophthora Online Course: Training for Nursery Growers.. Title. ...
Phytophthora capsici AVR3a11 and Phytophthora infestans PexRD2. Despite sharing ,20% sequence identity in their effector ... Structures of Phytophthora RXLR effector proteins: a conserved but adaptable fold underpins functional diversity 14th October ... Structures of Phytophthora RXLR effector proteins: a conserved but adaptable fold underpins functional diversity ... Bioinformatic analyses suggest that the core fold occurs in ∼44% of annotated Phytophthora RXLR effectors, both as a single ...
Brown or purplish black spots on the leaves and stems of peonies are symptoms of Botrytis and Phytophthora blights. Both attack ... Eco-friendly Control of Botrytis and Phytophthora Blights on Peonies. >","startOffset":"-5"}},"width":"750","height":"230"} ...
Expression analyses of the 12 GK genes in Phytophthora infestans and their orthologues in Phytophthora sojae, revealed ... GK4, a G-protein-coupled receptor with a phosphatidylinositol phosphate kinase domain in Phytophthora infestans, is involved in ...
A rebuttal to the letter to the editor concerning Defining species boundaries in the genus Phytophthora: the case of ... A rebuttal to the letter to the editor concerning Defining species boundaries in the genus Phytophthora: the case of ... Phytophthora andina.Journal Article Plant Pathology. (UK). ISSN 0032-0862. 61(2):221-223. ...
Demonstration of differentially regulated proteins during a compatible interaction between Phytophthora infestansand Solanum ... Demonstration of differentially regulated proteins during a compatible interaction between Phytophthora infestansand Solanum ... Demonstration of differentially regulated proteins during a compatible interaction between Phytophthora infestansand Solanum ...
The disease is caused by a fungal species, Phytophthora cactorum. It causes rot in the fruit of the tree, turning the shuck ... But, if your tree gets struck with pecan phytophthora rot, a fungal infection, you could lose the entire harvest. ...

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